No heat and I'm cold.

Question

I have a Rheem MD: RGDG-10EAMER, S/N DF50302 F4894 9075.When I move the thermostat for heat the induction blower operates. The igniter false to glow in 25-30 secods, but the circulation fan operates too.This problem appears intermittent over the last week. I've noticed the two (2) green lights without an amber when all works according to plan. When the aforementioned problem appears the two green light glow and so does the amber light. The amber lights illuminates after the greens do (2-3 sec). The amber light blinks four times, then on the fifth time the blinking become more rapid.Thanks!!!ScottCold in Georgia!